package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
public class UserServicelmpl implements UserService {
    @Autowired
    private WeChatProperties weChatProperties;
    @Autowired
    private UserMapper userMapper;
    //微信服务接口地址
    public static final String WX_LOGIN="https://api.weixin.qq.com/sns/jscode2session";
    /**
     * 微信登陆
     * @param userLoginDTO
     * @return
     */
    @Override
    public User wxLogin(UserLoginDTO userLoginDTO) {
        //调用微信接口服务，获得当前微信用户的oprnId
        Map<String, String> map =new HashMap<>();
        //map里封装的是请求参数
        map.put("appid",weChatProperties.getAppid());
        map.put("secret",weChatProperties.getSecret());
        map.put("js_code",userLoginDTO.getCode());
        map.put("grant_type","authorization_code");
        String json = HttpClientUtil.doGet(WX_LOGIN, map);  //返回的格式为json

        //JSON.parseObject(json)： 将 JSON 字符串解析成 Java 对象。
        JSONObject jsonObject= JSON.parseObject(json);
        String openid = jsonObject.getString("openid");

        //判断openid是否为空，如果为空表示登录失败
        if(openid==null){
            throw  new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }

        //判断当前用户是否为新用户
        User user = userMapper.getByOpenid(openid);

        //如果是新用户，自动完成注册
        if(user==null){
//            user =User.builder()
//                    .openid(openid)
//                    .createTime(LocalDateTime.now())
//                    .build();
            // userMapper.insert(user);

            User user1=new User();
            user1.setOpenid(openid);
            user1.setCreateTime(LocalDateTime.now());
            userMapper.insert(user1);
        }

        //返回这个用户对象
        return user;
    }
}
